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Imaging 123I with a scintillation camera. A study of detection performance and quality factor concepts

Bolmsjö, Magnus S. ; Persson, Bertil R.R. LU orcid and Strand, Sven Erik LU (1977) In Physics in Medicine and Biology 22(2). p.266-277
Abstract

Image quality, resolution and sensitivity of a scintillation camera equipped with various collimators have been investigated using high purity 123I. Pulse height distributions of 123I from a thyroid phantom partly in air and partly immersed in water demonstrated the substantial septa penetration of the 440 and 529 keV gamma rays of 123I with high resolution collimators. Line spread functions were recorded and the modulation transfer function was evaluated from them. The two concepts of 'figure of merit' also used were QB=Sa mod MTF mod 2, where Sa is the plane sensitivity and QC=S2/(S+2B), where S is the true signal from the object and B... (More)

Image quality, resolution and sensitivity of a scintillation camera equipped with various collimators have been investigated using high purity 123I. Pulse height distributions of 123I from a thyroid phantom partly in air and partly immersed in water demonstrated the substantial septa penetration of the 440 and 529 keV gamma rays of 123I with high resolution collimators. Line spread functions were recorded and the modulation transfer function was evaluated from them. The two concepts of 'figure of merit' also used were QB=Sa mod MTF mod 2, where Sa is the plane sensitivity and QC=S2/(S+2B), where S is the true signal from the object and B is the total background or noise due to septa penetration and scatter.

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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
in
Physics in Medicine and Biology
volume
22
issue
2
article number
006
pages
12 pages
publisher
IOP Publishing
external identifiers
  • pmid:857263
  • scopus:0017367246
ISSN
0031-9155
DOI
10.1088/0031-9155/22/2/006
language
English
LU publication?
yes
id
31108aed-7fbf-498e-a7d5-e2f88dec392c
date added to LUP
2020-08-30 21:03:31
date last changed
2024-01-02 17:28:10
@article{31108aed-7fbf-498e-a7d5-e2f88dec392c,
  abstract     = {{<p>Image quality, resolution and sensitivity of a scintillation camera equipped with various collimators have been investigated using high purity <sup>123</sup>I. Pulse height distributions of <sup>123</sup>I from a thyroid phantom partly in air and partly immersed in water demonstrated the substantial septa penetration of the 440 and 529 keV gamma rays of <sup>123</sup>I with high resolution collimators. Line spread functions were recorded and the modulation transfer function was evaluated from them. The two concepts of 'figure of merit' also used were Q<sub>B</sub>=S<sub>a</sub> mod MTF mod <sup>2</sup>, where S<sub>a</sub> is the plane sensitivity and Q<sub>C</sub>=S<sup>2</sup>/(S+2B), where S is the true signal from the object and B is the total background or noise due to septa penetration and scatter.</p>}},
  author       = {{Bolmsjö, Magnus S. and Persson, Bertil R.R. and Strand, Sven Erik}},
  issn         = {{0031-9155}},
  language     = {{eng}},
  month        = {{12}},
  number       = {{2}},
  pages        = {{266--277}},
  publisher    = {{IOP Publishing}},
  series       = {{Physics in Medicine and Biology}},
  title        = {{Imaging <sup>123</sup>I with a scintillation camera. A study of detection performance and quality factor concepts}},
  url          = {{http://dx.doi.org/10.1088/0031-9155/22/2/006}},
  doi          = {{10.1088/0031-9155/22/2/006}},
  volume       = {{22}},
  year         = {{1977}},
}